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<h2><span class="refentrytitle">Function template make_exception_handler</span></h2>
<p>boost::log::make_exception_handler</p>
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<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../utilities.html#header.boost.log.utility.exception_handler_hpp" title="Header &lt;boost/log/utility/exception_handler.hpp&gt;">boost/log/utility/exception_handler.hpp</a>&gt;

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<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span><span class="special">...</span> ExceptionsT<span class="special">,</span> <span class="keyword">typename</span> HandlerT<span class="special">&gt;</span> 
  <a class="link" href="nothrow_exception_handler.html" title="Class template nothrow_exception_handler">nothrow_exception_handler</a><span class="special">&lt;</span> <span class="identifier">MPL_sequence_of_ExceptionsT</span><span class="special">,</span> <span class="identifier">HandlerT</span> <span class="special">&gt;</span> 
  <span class="identifier">make_exception_handler</span><span class="special">(</span><span class="identifier">HandlerT</span> <span class="keyword">const</span> <span class="special">&amp;</span> handler<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">nothrow_t</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span></pre></div>
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<a name="idm73495"></a><h2>Description</h2>
<p>The function creates an exception handler functional object. The handler will call to the user-specified functional object with an exception as its argument. If the exception type cannot be identified, the handler will call the user-defined functor with no arguments, instead of propagating exception to the caller. All expected exception types should be specified as first template parameters explicitly, in the order they would be specified in a corresponding <code class="computeroutput">try/catch</code> statement.</p>
<p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.</p>
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<td><p><span class="term">Parameters:</span></p></td>
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<td><p><span class="term"><code class="computeroutput">handler</code></span></p></td>
<td><p>User-defined functional object that will receive exceptions. </p></td>
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<td><p><span class="term">Returns:</span></p></td>
<td><p>A nullary functional object that should be called from within a <code class="computeroutput">catch</code> statement. </p></td>
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<td align="right"><div class="copyright-footer">Copyright © 2007-2021 Andrey Semashev<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>).
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